Discovering your purpose doesn't have to be complicated. Look at what you do and why you do it. Is it to support your family? That's your purpose. Is it to make a difference in your customer's life? That's your purpose.
When you get inside a literary novel you feel that the author, more often than not, just doesn't know enough about things. They haven't been around enough - novelists never go anywhere. Once I discovered true books about real things - books like 'How To Run a Company' - I stopped reading novels.